'We don't know what drove the ancestors to birds to take flight. Seeking food in the trees is just one of the many possibilities,' she added.

她补充道，我们并不知道是什么原因驱使鸟类的祖先飞行的，在树上觅食正好是许多可能性之一。

youdao

The first flight test will take place in 2011 and weapons capabilities will be simulated.

该机的首次飞行测试将在2011年进行，而攻击能力测试采用模拟的方式进行。

youdao

But there, where spreads the infinite sky for the soul to take her flight in, reigns the stainless white radiance.

但是在那里，纯白的光辉，统治着伸展着的为灵魂翱翔的无际的天空。

youdao

The inventors estimate a test-flight could take place in less than a year and a half with final certification by 2010.

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The standard would significantly expand the FAA's so-called "sterile cockpit rule, " which prohibits pilots from engaging in non-flight-related conversations during take-offs and landings.

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The fanfare over the release of its A380 was dampened by a variety of production issues, including cabin wiring issues, cracks that appeared inside some of the wings, and an engine that blew apart during the take-off of a Qantas Airways flight departing Singapore in 2010.

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